66324546 has 12 divisors (see below), whose sum is σ = 143703222. Its totient is φ = 22108176.

The previous prime is 66324541. The next prime is 66324547. The reversal of 66324546 is 64542366.

It can be written as a sum of positive squares in only one way, i.e., 66243321 + 81225 = 8139^2 + 285^2 .

It is a super-2 number, since 2×66324546² = 8797890804212232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66324546.

It is not an unprimeable number, because it can be changed into a prime (66324541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1842331 + ... + 1842366.

Almost surely, 2^66324546 is an apocalyptic number.

66324546 is an abundant number, since it is smaller than the sum of its proper divisors (77378676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66324546 is a wasteful number, since it uses less digits than its factorization.

66324546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684705 (or 3684702 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66324546 is about 8143.9883349622. The cubic root of 66324546 is about 404.7853274754.

The spelling of 66324546 in words is "sixty-six million, three hundred twenty-four thousand, five hundred forty-six".